I need to get the scroll y movement and the movement should update the height of UIImageView.

So if I scroll up the UITableView, the UIImage should reduce the height, if I scroll it down, the UIImage should increment its height.

I've already implemented the methods scrollViewWillBeginDragging and scrollViewDidScroll delegating <UIScrollviewdelegate>, I've tried to work with tableview.contentOffset.y, but The scroll is less than the reduce of UIImageView's height.

It should be a 1:1, so if I scroll up the Tableview for 20px, UIImage.frame.size.height -= 20.

Post the actual relationships between the UIImageView and UITableView. I.E. if they are subviews of a container UIView, if they are owned by a single UIViewController or UITableViewController, etc.
–
IdlesJun 20 '13 at 1:17

They are part of the same view, 2 separated levels..I've got the uiimageview back and in front I've got the uitableview. Was this the answer that you needed?
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BellotsJun 20 '13 at 1:20

At start height of the imageview and height of the tableview's content are equal? Or height of the imageview is equal to height of the tableview? I try imagine image on screen when doing scroll up and down. Height of your imageview have to tend to 0 for scrolling up?
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stoshaJun 20 '13 at 1:56